| 刘苏,朱新平,陈昆慈,赵建,李凯彬,潘德博.2011.杂交鳢(斑鳢 ♀ ×乌鳢 ♂ )及其自交后代细胞核型初步分析.动物学杂志,46(1):100-105. |
| 杂交鳢(斑鳢 ♀ ×乌鳢 ♂ )及其自交后代细胞核型初步分析 |
| Karyotype Analysis of the Hybrid Snakehead (Channa maculata ♀ ×C.argus ♂ ) and Its Inbred Progeny (F2) |
| 投稿时间：2010-05-24 修订日期：2010-11-01 |
| DOI： |
| 中文关键词: 杂交鳢 F2 染色体 核型 |
| 英文关键词:Hybrid Snakehead F2 Chromosome Karyotype |
| 基金项目:国家公益性行业(农业)科研专项(No.200903045); |
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| 中文摘要: |
| 对杂交鳢(斑鳢♀×乌鳢 ♂ )(Channa maculata ♀×C.argus ♂ )及其自交后代的细胞核型进行了初步分析。结果表明,杂交鳢染色体数目为2n=45,核型公式为3m+4sm+6st+32t,染色体臂数(NF)为52;杂交鳢自繁后代群体存在两种染色体核型,一是染色体数目为45,核型公式为3m+4sm+6st+32t,NF=52,另一种为染色体数目44,核型公式为2m+4sm+6st+32t,NF=50。经对比分析,在F2群体中,染色体数目为45的核型公式与杂交鳢相似,而染色体数目为44的与杂交鳢相比少了一条中部着丝点的染色体。推测杂交鳢减数分裂可能会产生染色体数目分别为23条和22条的两种配子。 |
| 英文摘要: |
| The diploid chromosome number and karyotype of Hybrid Snakehead (Channa maculata ♀×C.argus ♂ ) and its inbreeding population (F2) were studied by somatic cells in vivo culture.The results indicated that the diploid chromosome number of hybrid snakehead was 2n=45,karyotype formula was 3m+4sm+6st+32t,and arm number (NF) was 52.The inbreeding population (F2) had two kinds of karyotype,a sort of diploid chromosome number 2n=45,and karyotype formula 3m+4sm+6st+32t,NF=52; and the other diploid chromosome number 2n=44,and karyotype formula 2m+4sm+6st+32t,NF=50.The comparative analysis showed that the karyotype formula of F2 (2n=45) was consistent with that of hybrid snakehead,however there was a metacentric chromosome missed in chromosome of some F2 individuals (2n=44) compared to hybrid snakehead.Therefore,it can be speculated that hybrid snakehead may produce two kinds of generative cells with 23 and 22 chromosomes,respectively. |
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